Comparing entire colour patterns as birds see them

Colour Vision in Birds Comparing behavioural thresholds and model predictions

What birds see.

Relative colour cues improve colour constancy in birds.

A ripe strawberry looks red to our eyes in sunlight and in the green light of a forest, although the spectrum of light reflected from its surface differs dramatically. This is caused by two effects: colour constancy and our ability to learn relative colour cues - the ripe strawberry remains relatively 'redder' than an unripe green strawberry. While colour constancy - the ability to recognize co...

Good Colour Maps: How to Design Them

Many colour maps provided by vendors have highly uneven perceptual contrast over their range. It is not uncommon for colour maps to have perceptual flat spots that can hide a feature as large as one tenth of the total data range. Colour maps may also have perceptual discontinuities that induce the appearance of false features. Previous work in the design of perceptually uniform colour maps has ...

Materials science. Now you see them.

PERSPECTIVES C rystallization lies at the heart of many natural and technological processes, from the production of pharmaceuticals and nanomaterials to the formation of bones and teeth, frost heave, and scale deposi-tion. Crucial features of these crystals, such as lattice orientation, particle size, and size distribution , are defined by conditions during the earliest stages of precipita-tion...